User guide

117
Supported AT Commands
For data service, your QUALCOMM Globalstar phone works as a wireless
modem. In other words, it functions as Data Communications Equipment
(DCE) that communicates with your computer, or Data Terminal
Equipment (DTE).
In the process, your computer sends AT (modem attention) commands to
the phone. Table 2 shows the AT (Hayes modem compatible) commands
that the phone supports for data. For many commands, the entries for
“Value Range,” “No Value Range,” “No Value Definition,” or “Power ON
Definition” have no valid value. These entries have different symbols in
place of values:
■ A dash “-” character means that, for this command, the value is either
not present or not allowed.
■ A caret “^” character means that no current value state (or Power-ON
state) is kept internally.
■ An asterisk “*” character means you should consult a footnote for this
entry.
The command syntax uses the following conventions:
■ Words enclosed in <angle brackets> identify parameters that can be
specified as part of the command.
■ Syntactical elements enclosed in [square brackets] are optional and
may be omitted from the command line.
■ Syntactical elements enclosed in {brackets} are required and must be
specified as part of the command.
■ The use of | between syntactical elements indicates only one of the
elements may be specified as part of the command. For example, the
command syntax for S3{=<value>|?} must be either S3=<value> or
S3?.
■ The “+” and “$” characters are used to identify extended AT commands.
“+” and “$” denote standard and manufacturer-specific extended
commands respectively.
■ A semicolon (“;”) is used to concatenate additional commands (basic or
extended) after an extended command.
Table 2. Supported AT Commands
AT Command and Syntax AT Command
Description (brief)
Value Range No Value
Definition
Power ON
Definition
E[<value>] Echo OFF|ON [0-1] 0 1
I[<v alu e>] Re ques t Id enti ficat ion
Information
[0-2] 0 ^
L[<value>] Monitor Speaker
Loudness
[0-3] 0 ^